Не работает программа на С (Linux)

#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <stdlib.h>
#include <arpa/inet.h>
 
int main(int argc, char **argv) {
if (argc != 3) {
printf("Usage: %s <ip address> <subnet mask>\n", argv[0]);
return 1;
}
 
struct in_addr ip_addr, subnet_mask;
uint32_t ip, mask, network, host;
int prefix_len = 0;
 
if (inet_pton(AF_INET, argv[1], &ip_addr) != 1) {
printf("Invalid IP address\n");
return 1;
}
 
if (inet_pton(AF_INET, argv[2], &subnet_mask) != 1) {
printf("Invalid subnet mask\n");
return 1;
}
ip = ntohl(ip_addr.s_addr);
mask = ntohl(subnet_mask.s_addr);
 
// Calculate the prefix length from the subnet mask
while (mask & 0x80000000) {
prefix_len++;
mask «= 1;
}
 
printf("Prefix length: %d\n", prefix_len);
 
// Calculate the network and host parts of the IP address
network = ip & mask;
host = ip & ~mask;
 
printf("Network address: %s\n", inet_ntoa((struct in_addr) { .s_addr = htonl(network) }));
 
printf("Host address: %s\n", inet_ntoa((struct in_addr) { .s_addr = htonl(host) }));
// Print network number and host number
printf("Network number: %d.%d.%d.%d\n",
(network » 24) & 0xff,
(network » 16) & 0xff,
(network » 8) & 0xff,
network & 0xff);
printf("Host number: %d.%d.%d.%d\n",
(host >>24) & 0xff,
(host >>16) & 0xff,
(host >>8) & 0xff,
host & 0xff);
printf("Mask in hex: 0x%x\n", ntohl(subnet_mask.s_addr));
 
printf("Mask in binary: %d.%d.%d.%d\n",
 
(subnet_mask.s_addr » 24) & 0xff,
 
(subnet_mask.s_addr » 16) & 0xff,
 
(subnet_mask.s_addr » 8) & 0xff,
 
subnet_mask.s_addr & 0xff);
 
printf("Mask in decimal: %d\n", prefix_len);
 
 
 
return 0;
 
}